I couldn't wait for my new speil stuff to finally arrive. But then I was completely surprised. I ordered it on Saturday and it arrived on Wednesday. It was only announced in about 1 1/2 weeks.
During my research on the Internet, I came across various articles. The China Laser is cheap, but it has a few deficits in the design. One of them is safety-related deficiencies. For example, a missing emergency stop switch. Or a defective earth connection. The cable lug of the earth conductor was clamped directly onto the paint. The other deficiencies are in the design. In this respect, we Western Europeans are still a nose ahead of the Asians. But this is also reflected in the price.
The control panel
the exhaust air
The fan supplied leaves a little to be desired. So I got rid of it and installed something better. I decided on a tube fan. I don't need to say anything about the blue hose supplied. Top Chinese workmanship. So off it goes to the plastic collection.
Rear connections
Inside the enclosure there is an air duct from the table to the back wall. Since I am installing a height-adjustable table that covers the entire possible surface, this has to be removed.
However, this is not as easy as it looks. From the back of the unit, 4 small screws have to be loosened. Then the channel lies loose inside the housing. And there it is. In order to remove it, first the laser table and then the entire mechanics must be removed. Then the ventilation duct can be pulled out of the front of the unit. Then the mechanics can be mounted again. I quickly replace the existing screws with Allen screws. This makes it easier to hold them when tightening them. This shows the Chinese craftsmanship. There are still brow marks on the existing fastening holes. So watch your fingers.
Die Wasserkühlung
An aquarium pump is supplied for water cooling. There is nothing wrong with this. Fill a bucket with water and place it next to the laser cutter. Place the pump in the bucket and lead the return flow back to the bucket. The hoses supplied with the device are a little short (you have to save money somewhere). They may need to be extended. I do not recommend replacing the entire hose. You have to reconnect the hoses to the laser tube and the tube is made of glass.
Cooling water filling
I use distilled water for cooling because we have very chalky water in our community. So I can count on less limescale deposits. Distilled water is also less susceptible to algae.
I have routed the water and power lines over the lid from the Kansiter and then sealed them with hot glue.
The protective glass
The glare shield is covered with a film. The protective glass must be removed so that it can be pulled off cleanly. To do this, loosen the screws and remove the mounting brackets. After removing the protective film, the glare shield can be reinstalled.
Swiss adaptation
Somewhat exotic sockets are installed on the unit. The connection cables are supplied as Schuko. I would classify the sockets as English. Of course, everything will be converted to Swiss standard.
Further optimisation after first test
During the first test of the laser, the cellar was filled with the stench of smoke. I installed a new fan and discharged the exhaust air out of the window. Too little power? Leaky exhaust pipe? So I took a closer look at the unit. There is a small PC fan installed in the back of the control compartment. Another fan can be found in the power supply unit. There is a large hole in the partition between the laser room and the control unit. There are also other openings between the two compartments in the rear and at the front. Air inlet openings can only be found at the side of the control compartment and at the bottom of the laser compartment. I assumed that the two fans in the control section probably suck in their air from the combustion chamber and then blow it out of the housing at the back.
At first, I wanted to leave a few air inlets in the front of the shaker. I wanted to draw all the air through the control unit so that no smoke could flow back into the control unit.
Behind the front, however, there is a print mounted on a metal sheet. So now I have drilled 4 ventilation openings in the combustion chamber and sealed the openings in the partition wall. This way, the combustion chamber should be able to suck in enough fresh air, and by sealing the partition wall, I force the two fans in the control section to suck in their fresh air through the opening in the control section. The next test will show whether I was right with my assumption.
Not quite. The newly installed tube fan has too little power and doesn't really deserve the name fan. I replaced it with a 2-stage, more powerful fan.
